What is the differences between Diana and Diana F?

I'm currently looking for a Diana camera to start off my Lomo journey. Can anyone tell me what are the differences between Diana151 and Diana F126? Furthermore, what are the differences between Diana151 and Diana+? and thedifferences btw Diana F126 and Diana F+ ? I'm waiting online for the answer! Thank you soooooo much!!!!

Diana F has a flash.

Diana F, its easy to take the lens off and turn it into a pinhole camera.